Greenhead vs. Horsefly — What's the Difference?

A biting horsefly with green eyes.

A stoutly built fly, the female of which is a bloodsucker and inflicts painful bites on horses, humans, and other large mammals.

An ant with a green head and a painful sting.

Any of numerous large biting tabanid flies, the females of which feed on the blood of various mammals.

A male mallard duck.

Any of several medium to large flies, of the family Tabanidae, that suck the blood of mammals (not to be confused with Stomoxys calcitrans, the stable fly, or dog fly).

Any of several horseflies having green eyes, found especially in coastal regions.

Any dipterous fly of the family Tabanidæ, that stings horses, and sucks their blood.

Tabanus nigrovittatus, a biting horsefly.

The horse tick or forest fly (Hippobosca).

The mallard.

Winged fly parasitic on horses

A fish, the striped bass.

Large swift fly the female of which sucks blood of various animals

The mallard.

A state of greenness; verdancy.